Amidated Pectin Solid Supports for Nucleic Acid Isolation
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Solution Overview
Problem
Current methods for nucleic acid isolation from biological samples are lengthy and not easily amenable to automation, hindering the efficiency of molecular diagnostic assays by introducing inhibitors that affect polymerase activity.
Innovation Solution
The use of solid supports modified with amidated pectins, which are covalently bound to the surface, facilitating the binding, washing, and elution of nucleic acids, thereby enabling efficient isolation and detection compatible with automated systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional nucleic acid isolation methods are used, then nucleic acids can be extracted from biological samples, but the process is lengthy and introduces inhibitors that affect polymerase activity
Solution Approach 1:
The patent modifies the chemical parameters of the solid support by using amidated pectin instead of conventional silica or magnetic beads. This chemical modification changes the binding characteristics to be less inhibitory to polymerase activity while maintaining efficient nucleic acid capture, thus improving assay accuracy without sacrificing isolation speed
Solution Approach 2:
The patent employs a composite material system combining amidated pectin (a natural polymer with specific chemical properties) with solid support particles. This composite approach leverages the unique properties of amidated pectin - its ability to bind nucleic acids effectively while not introducing inhibitors - thereby resolving the contradiction between fast isolation and assay reliability
2Extent of automation
If conventional nucleic acid isolation methods are used, then nucleic acids can be extracted, but extensive sample processing is required which is not easily amenable to automation
Solution Approach 1:
The patent segments the complex isolation process into a single integrated step by using amidated pectin-modified solid supports that simultaneously perform binding, washing, and elution functions. This eliminates the need for multiple separate processing steps, making the method easily amenable to automation while reducing device complexity
Solution Approach 2:
The amidated pectin-modified solid support serves multiple functions: it binds nucleic acids from diverse sample types, tolerates various inhibitors, and enables direct use in PCR without additional purification steps. This multi-functionality simplifies the overall workflow and enhances automation compatibility
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies nucleic acid isolation, reduces the need for extensive sample processing, and produces high-quality nucleic acids suitable for fast and accurate detection methods, such as PCR, enhancing the automation and efficiency of molecular diagnostics.
Implementation Method 1
the modified pectin comprises a plurality of amino groups
Implementation Method 2
contacting the sample with a solid support disclosed herein thereby binding the nucleic acid to the solid support
Data Source
AI summary
Solid supports modified with pectins derivatives are provided. The solid supports are useful in nucleic acid isolation, separation, and detection methods.